Person of Interest Sneak Peek: Are Reese and Finch Having Trouble with Shaw?

Although Reese (Jim Caviezel) and Finch (Michael Emerson) are now working full-time with Shaw (new series regular Sarah Shahi), it seems the new partnership isn't exactly going as well as Finch would have hoped.

"I realize that Miss Shaw is an effective asset, but I'm not sure I can work with somebody who refuses to carry a cell phone off the job," Finch argues in the exclusive sneak peek from the Season 3 premiere below. But Reese is willing to give her the benefit of the doubt. "We can't say we didn't already know, Finch. First time we met, Shaw shot me!" he says. "People are out there trying to killer her, you know."

Of course, the clip also hints at the bigger problem for Reese and Finch: The Machine is giving out numbers to other people, and no one knows where the Machine is! However, fans of the show might have a chance to solve that mystery as the Machine infiltrates Facebook. As first hinted at by executive producers Jonathan Nolan and Greg Plageman at Comic-Con in July, the show has launched the "You May Be a Person of Interest" app, an integrated social photo app on the show's Facebook page.

Fans can log on, submit photos of themselves from their Facebook accounts, and have the Machine identity their location and their threat level. Users can then share the photo with friends and can even submit it for possible inclusion on the third season of the show!

Person of Interest premieres at a new night and time on Tuesday, Sept. 24 at 10/9c on CBS. Check out an exclusive first look at the premiere below.